卧式自清洗网式过滤器过滤及排污过程的数值模拟

doi:10.3785/j.issn.1008-9209.2021.02.251

浙江大学学报（农业与生命科学版）

2022, Vol. 48

Issue (1): 117-124 DOI: 10.3785/j.issn.1008-9209.2021.02.251

农业工程

卧式自清洗网式过滤器过滤及排污过程的数值模拟

谢炎¹(

),刘贞姬¹(

),李洁¹,宗全利^1,²,金瑾¹,石凯¹

^1.石河子大学水利建筑工程学院，新疆石河子 832000
^2.青岛农业大学资源与环境学院，山东青岛 266109

Numerical simulation of the filtration and sewage processes of horizontal self-cleaning mesh filter

Yan XIE¹(

),Zhenji LIU¹(

),Jie LI¹,Quanli ZONG^1,²,Jin JIN¹,Kai SHI¹

^1.College of Water & Architectural Engineering, Shihezi University, Shihezi 832000, Xinjiang, China
^2.College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, Shandong, China

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摘要：

为了研究卧式自清洗网式过滤器在不同进水流速下过滤和排污过程中内部流场的分布规律，利用Fluent软件对卧式自清洗网式过滤器的过滤和排污过程进行清水流场的数值模拟，得到不同进水流速下的压强场和速度场，并将模拟结果与试验结果对比，二者相对误差在10%以内，证实了数值模拟的可靠性。数值模拟结果表明，进水流速越大，罐体和排污系统内的水流掺混越剧烈，可减少泥沙淤积，有助于提高过滤和排污效果，但随着进水流速的增大，罐体和排污系统的进出口压强差随之增大，其水头损失也增大，对过滤器结构稳定性要求也越高。上述研究结果可为卧式自清洗网式过滤器结构优化提供参考依据。

关键词： 自清洗网式过滤器; 过滤过程; 排污过程; 数值模拟; 水头损失

Abstract:

In order to study the change rule of the internal flow field of the self-cleaning mesh filter with different inlet flow rates during the filtration and sewage processes, we used Fluent software to carry out the numerical simulation of the clear-water flow field for the filtration and sewage processes of the self-cleaning mesh filter, and obtained the pressure field and velocity field at the different inlet flow rates. Comparing the numerical simulation results with the physical test results, the relative error was within 10%, which confirmed the reliability of the numerical simulation. Meanwhile, the results of the numerical simulation showed that the higher the water flow rate was, the more violent the mixing of water was in the tank and the sewage system, which could reduce the sedimentation and help to improve the filtration and sewage effects. Moreover, with the increase of the inlet flow rate, the pressure difference between the inlet and outlet of the tank and the sewage system increased, and the head loss also increased, and the requirement for the stability of the filter structure was higher. The above research results can provide a reference for the optimization of the horizontal self-cleaning mesh filter structure.

Key words: self-cleaning mesh filter filtration process sewage process numerical simulation head loss

收稿日期: 2021-02-25 出版日期: 2022-03-04

CLC:

S 277.9

基金资助: 国家自然科学基金(11662018)

通讯作者: 刘贞姬 E-mail: 1152370834@qq.com;shz_lzj@163.com

作者简介: 谢炎（https://orcid.org/0000-0002-6258-6233），E-mail：1152370834@qq.com

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引用本文:

谢炎,刘贞姬,李洁,宗全利,金瑾,石凯. 卧式自清洗网式过滤器过滤及排污过程的数值模拟[J]. 浙江大学学报（农业与生命科学版）, 2022, 48(1): 117-124.

Yan XIE,Zhenji LIU,Jie LI,Quanli ZONG,Jin JIN,Kai SHI. Numerical simulation of the filtration and sewage processes of horizontal self-cleaning mesh filter. Journal of Zhejiang University (Agriculture and Life Sciences), 2022, 48(1): 117-124.

链接本文:

https://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2021.02.251 或 https://www.zjujournals.com/agr/CN/Y2022/V48/I1/117

图1 自清洗网式过滤器结构示意图及过滤和排污过程流程图A.过滤系统；B.排污系统。1：进水口；2：出水口；3：压力计； 4：细过滤网；5：罐体；6：粗过滤网；7：吸沙组件；8：旋喷管出口；9：旋喷管；10：电磁阀；11：排污口；12：排沙管。

表1 排污系统和过滤系统的设计参数汇总表

图2 罐体（A）及排污系统（B）三维模型网格划分

表2 进出口边界条件

表3 数值模拟与物理试验的水头损失结果对比

图3 在不同流速下自清洗网式过滤器不同平面的压强云图A.进口流速为0.695 m/s；B.进口流速为1.366 m/s；C.进口流速为2.083 m/s。

图4 不同进口流速下自清洗网式过滤器不同平面的速度云图A.进口流速为0.695 m/s；B.进口流速为1.366 m/s；C.进口流速为2.083 m/s。

图5 不同流速下排污系统压强云图

图6 不同流速下排污系统速度云图

1	王慧 .我国水资源利用现状与节水灌溉发展对策思路总结[J].智能城市,2019,5(13):155-156. WANG H . Summary of current situation of water resources utilization and development countermeasures of water-saving irrigation in China[J]. Intelligent City, 2019, 5(13): 155-156. (in Chinese)
2	BOUNOUA S , TOMAS S , LABILLE J , et al . Understanding physical clogging in drip irrigation: in situ, in-lab and numerical approaches[J]. Irrigation Science, 2016, 34(4): 327-342. DOI:10.1007/s00271-016-0506-8 doi: 10.1007/s00271-016-0506-8
3	BOVé J , ARBAT G , DURAN-ROS M , et al . Pressure drop across sand and recycled glass media used in micro irrigation filters[J]. Biosystems Engineering, 2015, 137: 55-63. DOI:10.1016/j.biosystemseng.2015.07.009 doi: 10.1016/j.biosystemseng.2015.07.009
4	DE-DEUS F P , MESQUITA M , TESTEZLAF R , et al . Methodology for hydraulic characterisation of the sand filter backwashing processes used in micro irrigation[J]. MethodsX, 2020, 7: 100962. DOI:10.1016/j.mex.2020.100962 doi: 10.1016/j.mex.2020.100962
5	宗全利,刘飞,刘焕芳,等 .滴灌用自清洗网式过滤器排污压差计算方法[J].农业机械学报,2012,43(11):107-112. DOI:10.6041/j.issn.1000-1298.2012.11.020 ZONG Q L , LIU F , LIU H F , et al . Calculating and experiment on drainage pressure difference of self-cleaning screen filter for drip irrigation[J]. Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(11): 107-112. (in Chinese with English abstract) doi: 10.6041/j.issn.1000-1298.2012.11.020
6	杨洪飞,宗全利,刘贞姬,等 .大田滴灌用网式过滤器滤网堵塞成因分析[J].节水灌溉,2017(2):94-98. DOI:10.3969/j.issn.1007-4929.2017.02.022 YANG H F , ZONG Q L , LIU Z J , et al . The analysis of clogging factor for filter screen in field drip irrigation system[J]. Water Saving Irrigation, 2017(2): 94-98. (in Chinese with English abstract) doi: 10.3969/j.issn.1007-4929.2017.02.022
7	骆秀萍 .进水流速对自清洗网式过滤器排污系统内部流场影响数值分析[J].水利水电技术,2019,50(5):150-154. DOI:10.13928/j.cnki.wrahe.2019.05.018 LUO X P . Numerical analysis of influence from inlet velocity on internal flow field of sewerage system with self-cleaning mesh filter[J]. Water Resources and Hydropower Engineering, 2019, 50(5): 150-154. (in Chinese with English abstract) doi: 10.13928/j.cnki.wrahe.2019.05.018
8	陶洪飞,滕晓静,赵经华,等 .不同流量下全自动网式过滤器内部流场的数值模拟[J].水电能源科学,2016,34(12):180-185. TAO H F , TENG X J , ZHAO J H , et al . Numerical simulation of internal flow field in automatic screen filter under different flow[J]. Water Resources and Power, 2016, 34(12): 180-185. (in Chinese with English abstract)
9	王新坤,高世凯,夏立平,等 .微灌用网式过滤器数值模拟与结构优化[J].排灌机械工程学报,2013,31(8):719-723. DOI:10.3969/j.issn.1674-8530.2013.08.013 WANG X K , GAO S K , XIA L P , et al . Numerical simulation and structural optimization of screen filter in micro-irrigation[J]. Journal of Drainage and Irrigation Machinery Engineering, 2013, 31(8): 719-723. (in Chinese with English abstract) doi: 10.3969/j.issn.1674-8530.2013.08.013
10	喻黎明,徐洲,杨具瑞,等 .基于CFD-DEM耦合的网式过滤器水沙运动数值模拟[J].农业机械学报,2018,49(3):303-308. DOI:10.6041/j.issn.1000-1298.2018.03.036 YU L M , XU Z , YANG J R , et al . Numerical simulation of water and sediment movement in screen filter based on coupled CFD-DEM[J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(3): 303-308. (in Chinese with English abstract) doi: 10.6041/j.issn.1000-1298.2018.03.036
11	陶洪飞,朱玲玲,马英杰,等 .滤网孔径对网式过滤器内部流场的影响[J].灌溉排水学报,2017,36(12):68-74. DOI:10.13522/j.cnki.ggps.2017.12.012 TAO H F , ZHU L L , MA Y J , et al . The effect of screen aperture on internal flow field in automatic screen filter[J]. Journal of Irrigation and Drainage, 2017, 36(12): 68-74. (in Chinese with English abstract) doi: 10.13522/j.cnki.ggps.2017.12.012
12	李浩,韩启彪,黄修桥,等 .基于多孔介质模型下微灌网式过滤器CFD湍流模型选择及流场分析[J].灌溉排水学报,2016,35(4):14-19. DOI:10.13522/j.cnki.ggps.2016.04.003 LI H , HAN Q B , HUANG X Q , et al . Turbulence model selection and flow field analysis of the micro irrigation screen filter based on porous medium using CFD[J]. Journal of Irrigation and Drainage, 2016, 35(4): 14-19. (in Chinese with English abstract) doi: 10.13522/j.cnki.ggps.2016.04.003
13	刘贞姬,石凯,李曼,等 .立式与卧式自清洗网式过滤器水头损失试验研究[J].灌溉排水学报,2019,38(12):44-50. DOI:10.13522/j.cnki.ggps.2019005 LIU Z J , SHI K , LI M , et al . Experimental study on head loss of vertical and horizontal self-cleaning mesh filter[J]. Journal of Irrigation and Drainage, 2019, 38(12): 44-50. (in Chinese with English abstract) doi: 10.13522/j.cnki.ggps.2019005
14	宗全利,郑铁刚,刘焕芳,等 .滴灌自清洗网式过滤器全流场数值模拟与分析[J].农业工程学报,2013,29(16):57-65. DOI:10.3969/j.issn.1002-6819.2013.16.008 ZONG Q L , ZHENG T G , LIU H F , et al . Numerical simulation and analysis on whole flow field for drip self-cleaning screen filter[J]. Transactions of the CSAE, 2013, 29(16): 57-65. (in Chinese with English abstract) doi: 10.3969/j.issn.1002-6819.2013.16.008
15	侯宗宗,张可可,王宾宾,等 .不同滤网网孔模型的数值研究[J].船舶,2018,29(6):43-48. DOI:10.19423/j.cnki.31-1561/u.2018.06.043 HOU Z Z , ZHANG K K , WANG B B , et al . Numerical investigation of different filter mesh pore models[J]. Ship & Boat, 2018, 29(6): 43-48. (in Chinese with English abstract) doi: 10.19423/j.cnki.31-1561/u.2018.06.043
16	李曼,刘贞姬,石凯 .滴灌用网式过滤器排污效果试验研究[J].灌溉排水学报,2019,38(10):55-62. DOI:10.13522/j.cnki.ggps.20190265 LI M , LIU Z J , SHI K . Experimental study on sewage discharge effect of drip irrigation net filter[J]. Journal of Irrigation and Drainage, 2019, 38(10): 55-62. (in Chinese with English abstract) doi: 10.13522/j.cnki.ggps.20190265
17	石凯,刘贞姬,李曼 .新型翻板网式过滤器水头损失试验研究[J].排灌机械工程学报,2020,38(4):427-432. DOI:10.3969/j.issn.1674-8530.19.0111 SHI K , LIU Z J , LI M . Experimental study on head loss of a new type of rotatable plate screen filter[J]. Journal of Drainage and Irrigation Machinery Engineering, 2020, 38(4): 427-432. (in Chinese with English abstract) doi: 10.3969/j.issn.1674-8530.19.0111
18	石凯,刘贞姬,孟定华,等 .新型翻板网式过滤器排污性能试验研究[J].机械工程学报,2019,55(24):253-259. DOI:10.3901/JME.2019.24.253 SHI K , LIU Z J , MENG D H , et al . Experimental study on blowdown performance of new type of rotatable plate screen filter[J]. Journal of Mechanical Engineering, 2019, 55(24): 253-259. (in Chinese with English abstract) doi: 10.3901/JME.2019.24.253

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